Inheritance of Q band chromosomal polymorphisms in lake trout

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Abstract
The inheritance of quinacrine chromosomal banding polymorphisms was followed in lake trout crosses. Q-band variants studied included size variants and intensity (+/−) variants. Selected male and female lake trout were crossed with each other and with brook trout. The geneotypes of the parents were determined by examining the lake trout chromosomes in the lake/brook F1 hybrids, since the brook trout chromosomes lack Q bands. For several females, Q-band markers also were scored in haplold eggs. The data are consistent with segregation of the chromosome variants in the gametes and their transmission to the progeny in a Mendellan manner. The use of Q-band markers in breeding programs and population studies is discussed.